Program in its 4th year of saving smiles:

Fort Worth, Texas, is fluoridated:

"Between them, Jesus and Emeli Padilla got eight crowns along with sealants to protect their teeth from further decay. The children, who attend Sam Rosen Elementary School in Fort Worth, were both experiencing a lot of pain before they were treated, said their mother, Maria Padilla. Now they're happy, she added.

Multiple cavities and abscesses are the most common serious dental problems that dentists treat through Save a Smile, said dentist Tonya Fuqua, program manager.

'We have treated 4-year-olds because they have 10 teeth -- half of all the teeth in their mouth -- that are decayed,' she said."